Variety field guide
What to expect from Quadrato d’Asti Rosso Pepper Seeds
Quadrato d’Asti Rosso pepper seeds produce red sweet pepper fruit about 4 in, thick-walled blocky fruit on upright, erect plants reaching 31–36 in; maturity is 80-89 Days.
Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record
Quadrato d’Asti Rosso pepper seeds grow into upright, erect plants reaching 31–36 in, bearing red fruit about 4 in, thick-walled blocky fruit. Heat category: Sweet. It is especially suited to fresh eating, roasting, sautéing, stuffing, thick-walled sweet-pepper harvests, and seed saving from confirmed open-pollinated stock. Maturity is 80-89 Days.
About Quadrato d’Asti Rosso
Quadrato d’Asti Rosso is a sweet pepper grown as Capsicum annuum L. Plants have an upright, erect habit and reach 31–36 in; support is listed as stake. The principal mature or market color is Red, with fruit described as about 4 in, thick-walled blocky fruit. Reproductive classification: Open-Pollinated (OP). Maturity: 80-89 Days. Names associated with this variety include Quadrato d’Asti Rosso pepper, Pepper Seeds – Sweet – Quadrata d’Asti Rosso Pepper Seeds.
- Scientific name:Capsicum annuum L.
- Life cycle:Annual
- Planting season:Spring
- Growth habit:Upright/Erect
- Plant height:31–36 in
- Sunlight:Full sun
- Seed depth:1/4 in
- Germination:7–14 Days at 75–90 °F
- Spacing:18 in between plants; 24 in between rows
- Soil:Loamy; pH 6.0–6.5
- Water:Moderate
- Support:Stake
- Reproductive type:Open-Pollinated (OP)
- Fruit:Red; About 4 in, thick-walled blocky fruit
- Heat:Sweet; 0 SHU
History and seedkeeping context
Cornell documents a large Italian sweet pepper with thick-walled, squarish red fruit under the spelling Quadratto d’Asti Rosso. Italian regional material uses the phrase peperone quadrato d’Asti for the square pepper tradition associated with the Asti area. The customer title uses standard Italian quadrato while the Cornell spelling remains a documented alias.
The sources establish an Italian Asti association and the square, thick-walled fruit form, but they do not identify one original breeder or release date. The spelling correction is linguistic and source-aware, not a claim that all Asti square peppers are one identical cultivar. The available sources do not establish a named person’s tribal identity.
Cornell lists the cultivar, spelled Quadratto d’Asti Rosso in its database, at 80 to 85 days.
Fruit, flavor, and kitchen use
Use the large thick-walled fruit fresh, stuffed, roasted, grilled, sautéed, or preserved. Green fruit are edible, while red is the fully mature color. Heat intensity can vary with growing conditions and individual fruit. Sweet does not mean every fruit tastes identical; harvest stage and growing conditions still affect texture and sweetness. Quadrato d’Asti Rosso is especially useful for fresh eating, roasting, sautéing, stuffing, thick-walled sweet-pepper harvests, and seed saving from confirmed open-pollinated stock. Flavor and eating quality are described as heat intensity can vary with growing conditions and individual fruit. Sweet does not mean every fruit tastes identical; harvest stage and growing conditions still affect texture and sweetness. Heat classification: Sweet; listed range: 0 SHU. Pungency can shift with genetics, weather, water stress, and ripeness.
How to grow Quadrato d’Asti Rosso
Start Quadrato d’Asti Rosso indoors about 8 to 10 weeks before the last expected frost. Sow 1/4 in deep in a warm, evenly moist seed-starting mix; expect 7–14 Days near 75–90 °F. Provide strong light as soon as seedlings emerge, pot up before roots become crowded, and harden plants gradually before transplanting after nights are reliably warm.
Plant in full sun with loamy soil near pH 6.0–6.5. Space plants 18 in apart and rows 24 in apart. Maintain moderate moisture, mulch after the soil warms, and avoid excessive nitrogen. Install stake early where the upright, erect plant or fruit load warrants it. Mature height is 31–36 in.
Season care
• Warmth matters most during germination; keep Quadrato d’Asti Rosso seed warm without leaving the medium saturated. • Harden seedlings gradually and wait for warm nights before transplanting, because cold soil and wind can stall peppers for weeks. • Install stake before branches carry a heavy crop, and keep moisture even while fruit is setting. • Harvest at the color stage suited to the recipe, but leave fruit fully mature on selected plants when saving seed. • Use 80-89 Days as a planning range rather than a guaranteed calendar date; weather and transplant stress can shift first harvest.
Harvest and maturity
80-89 Days from transplant to first representative harvest; the same value is used in every description. Peppers can often be used at an immature green or transitional color, but fully ripe color is required for mature seed.
Saving seed
Peppers are largely self-pollinating but insect movement can produce crosses. To save Quadrato d’Asti Rosso true to type, grow several healthy representative plants, isolate them from compatible pepper varieties or use blossom bags or cages, and remove clear off-types before flowering. Allow selected fruit to reach full biological color, handle hot fruit with gloves, remove the seed, dry it in a thin labeled layer until fully hard and dry, then store it cool, dark, and dry. Keep the harvest year, source, isolation method, and selection notes with the lot.
Common questions
When is Quadrato d’Asti Rosso ready?
Plan around 80-89 Days. The listed range is a planning guide, and weather, transplant stress, and harvest stage can shift the actual date.
How long does germination take?
Expect 7–14 Days near 75–90 °F. Cooler media, excess water, old seed, or uneven moisture can delay emergence.
How large does it grow?
Expect about 31–36 in. Growth habit: Upright/Erect. Support: Stake.
How is it used?
Fresh eating, roasting, sautéing, stuffing, thick-walled sweet-pepper harvests, and seed saving from confirmed open-pollinated stock
Can I save seed?
Peppers are largely self-pollinating but insect movement can produce crosses.
